Structural requirements for long-chain (sphingoid) base inhibition of protein kinase C in vitro and for the cellular effects of these compounds.
Structural requirements for long-chain (sphingoid) base inhibition of protein kinase C in vitro and for the cellular effects of these compounds.
复制标题
体外蛋白激酶 C 的长链(鞘氨醇)碱抑制以及这些化合物的细胞作用的结构要求。
DOI:
10.1021/bi00434a004
复制
发表时间:
1989
期刊:
影响因子:
2.9
通讯作者:
Hunter,R
中科院分区:
文献类型:
--
作者:
MerrillJr,AH;Nimkar,S;Menaldino,D;Hannun,YA;Loomis,C;Bell,RM;Tyagi,SR;Lambeth,JD;Stevens,VL;Hunter,R
Revised Manuscript Received November 29, 1988 abstract: Sphingosine, sphinganine, and other long-chain (sphingoid) bases inhibit protein kinase C in vitro and block cellular responses to agonists that are thought to act via this enzyme. To gain further insight into the mechanism of this inhibition, a series of long-chain analogues differing in alkyl chain length (11-20 carbon atoms), stereochemistry, and headgroup were examined for (a) inhibition of protein kinase C activity in vitro,(b) the neutrophil respiratory burst in response to phorbol myristate acetate (PMA),(c) the PMA-induced differentiation of HL-60 cells, and (d) the growth of Chinese hamster ovary cells. In every instance, the effects were maximal with the 18-carbonhomologues, which are the same length as the predominant naturally occurring long-chain base (sphingosine). The lower potency of the shorter chain homologues was partially due to decreased uptake by cells. Small differences were obtained with the four stereoisomers of sphingosine (ie, D and L forms of erythro-and t/zra> sphingosine), with 7V-methyl derivatives of the different sphingosine homologues, and with simpler alkylamines (eg, stearylamine). The potency of the different headgroup analogues may be affected by the degree of protonation at the assay pH. The pKt of sphingosine was measured to be 6.7; the pK& varied among the analogues. These findings establish that the major structural features required forinhibition of protein kinase C and cellular processes dependent on this enzyme are the presence of a free amino group and an aliphatic side chain and that other groups have more subtle effects.
登录
查看更多内容
DOI:
10.1111/j.1432-1033.1988.tb13952.x
发表时间:
1988
期刊:
European journal of biochemistry
影响因子:
--
作者:
Takurou Kobayashi;Kunihiko Mitsuo;Ikuo Goto
通讯作者:
Ikuo Goto
DOI:
--
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Faucher,M;Gironès,N;Hannun,YA;Bell,RM;Davis,RJ
通讯作者:
Davis,RJ
影响因子:
5.8
作者:
Wise,BC;Kuo,JF
通讯作者:
Kuo,JF
DOI:
10.1016/s0021-9258(18)61077-4
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
D. Pittet;K. Krause;C. Wollheim;R. Bruzzone;D. Lew
通讯作者:
D. Lew
影响因子:
64.5
作者:
R. Bell
通讯作者:
R. Bell